-66.07% is the change from 837 to 284
Calculation steps:
[( 284 - 837 ) ÷ 837] x 100 = -66.07%
Formula
Percentage change = [(284 - 837) / 837] x 100
Subtract the new number by the original number
284 - 837 = -553
-553 ÷ 837 = -0.6606929510155317
-0.6606929510155317 x 100 = -66.07%